Shimano Deore RD-M5120-SGS 10/11 Speed Rear Derailleur – Long Cage, Shadow Plus

The Shimano Deore RD-M5120-SGS is a long cage, 10/11-speed mountain bike rear derailleur with Shimano's Shadow Plus clutch. It suits both 1x and 2x drivetrains and has the capacity to run a wide-range cassette up to 46T. The clutch keeps the chain tight over rough ground, which cuts chain slap and noise.

Product codes

• Model: RD-M5120-SGS
• Shimano code: ARDM5120SGS
• Cage: SGS (long cage)

Key features

• 10 / 11-speed compatible (chain and shifter must match the cassette speed)
• Shadow Plus clutch, which reduces chain slap and bounce on technical terrain
• Low-profile Shadow design with an optimised slant angle for light, precise shifting
• 11T pulleys for low friction
• 41T total capacity
• For single or double chainring setups

Compatibility

• Speeds: 10 or 11-speed
• Maximum rear sprocket: 46T with a single chainring (1x), 42T with a double (2x)
• Pairs with a 10 or 11-speed MTB shifter and chain

A good upgrade or replacement for a trail or XC build. New stock, priced to clear.